1957 Mercedes-Benz 300D vs. 1978 Porsche 911
To start off, 1978 Porsche 911 is newer by 21 year(s). Which means there will be less support and parts availability for 1957 Mercedes-Benz 300D. In addition, the cost of maintenance, including insurance, on 1957 Mercedes-Benz 300D would be higher. Both 1957 Mercedes-Benz 300D and 1978 Porsche 911 are equipped with a 2,994 cc engine. In terms of performance, 1978 Porsche 911 (185 HP @ 5500 RPM) has 27 more horse power than 1957 Mercedes-Benz 300D. (158 HP @ 5300 RPM) In normal driving conditions, 1978 Porsche 911 should accelerate faster than 1957 Mercedes-Benz 300D. With that said, vehicle weight also plays an important factor in acceleration. 1957 Mercedes-Benz 300D weights approximately 750 kg more than 1978 Porsche 911.
Compare all specifications:
| 1957 Mercedes-Benz 300D | 1978 Porsche 911 | |
| Make | Mercedes-Benz | Porsche |
| Model | 300D | 911 |
| Year Released | 1957 | 1978 |
| Engine Position | Front | Rear |
| Engine Size | 2994 cc | 2994 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 158 HP | 185 HP |
| Engine RPM | 5300 RPM | 5500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1930 kg | 1180 kg |
| Vehicle Length | 5200 mm | 4300 mm |
| Vehicle Width | 1870 mm | 1660 mm |
| Vehicle Height | 1630 mm | 1330 mm |
| Wheelbase Size | 3160 mm | 2280 mm |
| Fuel Tank Capacity | 71 L | 80 L |
